uf2
UF2 file format specification (by microsoft)
Adafruit_nRF52_Bootloader
USB-enabled bootloaders for the nRF52 BLE SoC chips (by adafruit)
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| uf2 | Adafruit_nRF52_Bootloader | |
|---|---|---|
| 12 | 2 | |
| 775 | 412 | |
| 1.7% | 2.4% | |
| 4.8 | 6.7 | |
| 17 days ago | about 2 months ago | |
| JavaScript | C | |
| GNU General Public License v3.0 or later | MIT License |
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
uf2
Posts with mentions or reviews of uf2.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2023-03-12.
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Running C Code on Feather RP2040
And the UF2 reference from Microsoft: https://github.com/microsoft/uf2/blob/master/README.md
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Problems flashing custom firmware to the nice!nano
I'm compiling a very stripped down example from https://github.com/embassy-rs/nrf-softdevice that should just loop forever and turn an LED on and off. I convert from a binary to the uf2 using this script linked in the adafruit bootloader repository. The command I run is uf2conv.py -c -b 0x26000 -f 0xADA52840. When running file on my binary the output is UF2 firmware image, family Nordic NRF52840, address 0x026000, 42 total blocks, exactly the same as on the ZMK image that works without a problem.
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RP2040. Willing to compensate for a solution.
How can I (someone with no electronics or programming experience) configure my own layout using QMK Config and then compile it into a .uf2 file that works on the Sea-Picro with my Ferris Sweep?
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Tell HN: macOS Ventura broke the entire Raspberry Pi Pico ecosystem
In case you haven't seen the UF2 file format, it's specifically designed to be robust w.r.t ensuring that the content makes it to the target intact despite common OS quirks.
https://github.com/microsoft/uf2
- Data is divided into 512 byte blocks, which lines up with the mass storage transfer size. - UF2 Max File Size
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RP2040 USB Bootloader?
The bootloader uses the UF2 protocol, which is cleverly designed to allow "drag and drop" flashing over USB mass storage.
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STM32F4 Remote Firmware Update Executable Script Suggestions/Help/Guidance
I'd strongly recommend using an application-specific USB bootloader if possible. The UF2 firmware update protocol is particularly slick, as it allows users to upload new firmware over USB mass storage and requires no staging space; if using this is an option, I'd go for it.
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Designing end products with option to update firmware via USB cable
The mentioned UF2 standard (UF2 - mdf5 checksum) actually offers the option to specifiy an MD5 checksum. Which is heavier on resources.
- Uf2: USB Flashing Format
Adafruit_nRF52_Bootloader
Posts with mentions or reviews of Adafruit_nRF52_Bootloader.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2023-03-12.
-
Problems flashing custom firmware to the nice!nano
I'm compiling a very stripped down example from https://github.com/embassy-rs/nrf-softdevice that should just loop forever and turn an LED on and off. I convert from a binary to the uf2 using this script linked in the adafruit bootloader repository. The command I run is uf2conv.py -c -b 0x26000 -f 0xADA52840. When running file on my binary the output is UF2 firmware image, family Nordic NRF52840, address 0x026000, 42 total blocks, exactly the same as on the ZMK image that works without a problem.
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Flashing OpenThread on Adafruit Feather nRF52840 Express
If your thing has some sort of bootloader already, use a flashing tool that's compatible with the bootloader - https://github.com/adafruit/Adafruit_nRF52_Bootloader or dfu-tool perhaps?
What are some alternatives?
When comparing uf2 and Adafruit_nRF52_Bootloader you can also consider the following projects:
littlefs - A little fail-safe filesystem designed for microcontrollers
nrf-softdevice
webdfu - WebUSB Device Firmware Upgrade example
pico-bootrom
uf2-samdx1 - USB Mass Storage bootloader (based on UF2) for SAMD21 and SAMD51
McAirpos - MakeCode Arcade games in RetroPie, Recalbox 7/8 and Batocera, running natively as ELF executables on Raspberry Pi OS/Linux ARM with 1-2 gamepads
vial-qmk - QMK fork with Vial-specific features.